ee

1. PROBLEM STATEMENT
Improper domestic fetching of water this is because
water customers lack patience like pouring water
carelessly or stealing water.

2. PROJECT OBJECTIVES
The objective of this project is divided into two categories
which are the main objective and the specific objectives
Main objective;
To design semi - automatic water sellers meter
Specific Objective;
To study the existing system (mechanical water meter).
To simulate the circuit.
Building and testing the prototype.

3. PROJECT SCOPE AND LIMITATIONS
This project is going to concern all those own pipes or
barrels for storing water for their home use or sells
water for more profit.
Limitations
Our system will not release water to the buyer when
the source is exhausted.
Our system will not accessible more than one
customer at once.

4. SIGNIFICANCE OF THE PROJECT
It will prevent the spilling of water when the customer
forget to grab a bucket
Our system will help to record total liter sold per day
It will help to fill the amount that will be needed to
bucket
It reduce coming of high bill different from using

5. METHODOLOGY
 In order to accomplish this project; the following is list of
methods that will followed during this project
Literature Review
Literature review has been done by studying the existing
system . Also other related information was studied.
Data Collection
The data collected help to build the proposed system so as to
meet the objectives.
 Data Analysis
The data collected were analyzed to determine the appropriate
component values to be used to enable the circuit operation

6. Conti…
Designing of the Circuit
A proper designing of the circuit will be done simply by selecting
appropriate components based on the information collected and
analyzed in order to meet the objectives of the project.
Circuit Simulation
The circuit will be simulated by using Simulation Software such as
Proteus and Circuit Wizard to check if it works according to the
anticipated results before the physical implementation
Building and test the Prototype
The circuit will be built on Printed Circuit Board so as to meet the
desired condition

7. LITERATURE REVIEW
Introduction;
This chapter describes the existing system, block diagram of existing
system and its disadvantages of existing system. And also describes the
proposed system, block diagram of proposed system and its
advantages.
Existing System;
In existing system the customer was getting service by paying money
and opening the water cork to get a water.
For that the customers were using water without care .

8. Block diagram of existing system
.
Water
reading
meter
Water
supply
Water
outlet
Water
cork
Water
bucket

9. Operation of existing system.
This meter works on principle of Faraday’s law of electromagnetic
induction;
When water enter precision, machined chamber contains a disc which
wobbles, the liquid pressure drives the disc to wobble and roller cam
causes nutating disc to make a complete cycle.
The movement of the disc are transmitted by gear train to an indicator
or totalizer, the close clearance between the disc and chamber ensure
minimum leakage for accurate and reputable measurement of each
volume cycle.
The disc carries on a ball and socket that allow it freely rotate and the
cycle is converted rotary by measuring spindle.
The consumption is read and billed in form of 100 cubic feet.

10. Disadvantage of existing system
Customer may not underestimate their water
consumption and amount owed because it is more
difficult to predict fluctuating water bills
Customer would be required to pay for all water used as
indicated by meter reading. Even if some of it was lost
during fetching process

11. Proposed System;
Proposed system the expectation is that at the end of this project, this
system will be attracted to be used as the method of determine the
reading of liters that used or consumed per day .This system can also
be able to send information of total liters sold per day to the owner of
this semi-automated meter
Advantage of Proposed System.
 It will prevent the spilling of water when the customer forget to
grab a bucket.
 Our system will help to record total liter sold per day
 Our system will able to send information to the owner after the
end of business/service.

12. Block diagram of proposed system

13. Operation of proposed system
When the customer pays the money to operator the
operator insert that amount by typing in the keypad sends
signal to the controller where the amount changed to
relevant liters which will be displayed in LCD at that tie
signal send to valve which will open and allow flow of water
to the customer to their relevant liters
Water flow sensor sense flow of water in system when their
absence of supply it send signal to controller that their no
supply and displayed in LCD
At end of a day GSM send all total liters sold per that day to
the owner.

14. Components of Proposed System
Water flow meter
It consists of plastic valve body, hall-effect sensor, and rotor.
The rotor rolls when the water will flow across it. And hall-
effect will sense the rotor motion and give the output in the
pulsating form.
Electric solenoid valve
This is a normally closed G1/2 12VDC electric solenoid valves
with barbed inlet and outlet ports, great for projects involving
low viscosity fluid control.
 Power supply
It is designed in such a way that it gives 12Vdc supply

15. Cont.….
GSM Module Global System for Mobile.
Its device that design for wireless radiation monitoring
through short monitoring service SMS
This module able to receive serial data from radiation
monitoring device like surveying or area monitoring and
transmit the data as a text
ARDUINO BOARD(atmega328)
It is used for the controlling purpose
KEYPAD
It is an input device which consist a set of number and
symbol, it in form of 4*4 matrix

16. Cont.…
Power converter(5V)
This it is electronic device that used to convert or to give
out desired value for our component
LCD
This it is device that is used to display all output
information

17. Data collection
 Primary data;
The following data are obtained directly from the field through the
questioner
s/n Question Answer
1 Bill unayopata yanaendana na matumizi
yako ya mwezi
hapana
2 Je unaweza kusoma unit za mita vizuri? 60% wamejibu ndio
40% wamejibu hapana
3 Je hatua gani unachukua bill ikija tofauti
na matumizi yako?
45% wanalipa
55% wanafika ofisini
4 Je kuna huitaji wa mita janja ya kusoma
na kukutunzia kumbukumbu zako
89% wamejibu ndio
11% wamejibu hapana

18. Contie..
Comparison between our system and existing system from the field we
get the following data
S/N WAYS Smart Meter Analog Meter
1 Remotely Disconnection of
Supply
Possible Not possible
2 Maintenance Cost low High
3 Data Security Avoid error
meter reading
Error in meter
reading
4 Remote Monitoring Possible Not possible

19. In this part it consist all data that related to our designed system and specification are collected through
various source include internet, books and datasheet that relate to our project
 Microcontroller ATmega328
Features
ATmega328/P
Pin Count

20. Flow water sensor
Flow Sensor Details
Model YF-S201
Sensor Type Hall effect
Max current draw 15mA
Output type 5V TTL
Working Flow Rate 1 to 30 Liters/minute
Working Temperature -25 to +80
Working Humidity 35% - 80% RH
Accuracy ±10%
Maximum Water Pressure 2.0 MPa
Size
Cable Length 15cm

21. Data Analysis
 The Flow Sensor;
The Flow Sensor is a device that detects and measure
water flow through pipes.
The water flow meter works with the flow sensor to
calculate water flow. The water flows through the rotor
blade Rotor will start to rotate thus, pulses produce an
output frequency that is directly proportional to the
volumetric flow rate/total flow rate through the meter

22. Data analysis
Arithmetic Analysis
The average velocity is an indication of the flow rate. The basic relationship for determining the
liquid flow rate.
Q = 𝑉 × 𝐴 …equation
where Q = flow rate/total flow rate of water through the pipe.
V = average velocity of the flow
A = cross-sectional area of the pipe.
Pulse frequency (Hz) = 7.5 × 𝑄
Q = is the flow rate in Liters/minute
𝐹𝑙𝑜𝑤 𝑅𝑎𝑡𝑒 ( 𝐿𝑖𝑡𝑟𝑒𝑠 /𝐻𝑜𝑢𝑟 ) = 𝑃𝑢𝑙𝑠𝑒 𝐹𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦 ×60 𝑚𝑖𝑛𝑢𝑡𝑒𝑠 7.5𝑄
OR
𝑆𝑒𝑛𝑠𝑜𝑟 𝐹𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦 (𝐻𝑧) = 7.5 × 𝑄 ( 𝐿𝑖𝑡𝑟𝑒𝑠 /𝑀𝑖𝑛𝑢𝑡𝑒 ⁄ )
𝐿𝑖𝑡𝑟𝑒𝑠 = 𝑄 × 𝑡𝑖𝑚𝑒 𝑙𝑎𝑝𝑠𝑒𝑑 (𝑠𝑒𝑐𝑜𝑛𝑑𝑠)
60 (𝑚𝑖𝑛𝑢𝑡𝑒 )

23. Flow chart of our system
Start
Typing
the price
Conversion
price to liter
Their
water
Allowing flow of
water from source
to pipe
Allow cork
to open
price = liters
Yes
Close the
cork
No
Yes No
End